SPECT脑血流灌注显像表现为局限性放射性分布稀疏或缺损一般不出现在哪项疾病中（）

A.缺血性脑血管疾病

B.偏头痛和脑肿瘤

C.脑脓肿

D.癫痫的发作间期

E.癫痫的发作期

Christmas is the anniversary of the birth of Christ, generally celebrated on December 25. It is one of the chief festivals of the Christian calendar and is (51) a social and family holiday. Christmas customs vary from (52) and among groups of different national (53) In most areas, however, homes and public places are (54) with evergreens, Christmas trees, (55) lights, and glittering ornaments. It is the busiest time of the year for merchants, and shops are filled (56) lavish displays and merchandise of all sorts. People send Christmas cards and buy gifts for their families and friends. Children look forward to (57) Santa Claus. They (58) their stockings on Christmas (59) and on Christmas morning they discover the gifts that have been left for them during the night. In the afternoon, families gather to (60) presents and to share the traditional Christmas dinner.

51().

A.like 

B.still 

C.also 

D.even